7-6
Using the Long-Term Chambers
Making Measurements
The following discussion assumes that you have already connected a Long-Term
Chamber, installed soil collars several hours or more before making a measurement
(see page 2-17), and have installed the Windows
®
and/or iOS software for the iPod
Touch (or other iOS device). This discussion also assumes that you have
connected your external sensors, including soil moisture and/or soil temperature
probes, to the Auxiliary Sensor Interface as described in Section 2, Initial Setup.
Although they are similar, measurement protocols for both the LI-8100A Windows
application software and the Apple iOS software are detailed below.
Connect the cables, battery, and chamber as described in Section 2, Initial
Setup.
Connect the LI-8100A and your computer using the appropriate serial cable,
as described in Section 2, Initial Setup.
Turn the LI-8100A on using the ON/OFF button on the inside panel of the
Analyzer Control Unit. Wait for the IRGA Ready light to illuminate. Note that
the chamber moves to its open position at system startup.
Measure the chamber offset as described in Section 2. Place the chamber over
the soil collar.
Insert the soil temperature probe and/or soil moisture probes at the desired
depths and distances from the chamber.
Software Setup Using the LI-8100A Windows Application Software
The following discussion assumes that you have installed the LI-8100A application
software on your PC, and are connected via the serial cables provided, or have
configured the LI-8100A and your computer to communicate via a wireless
network, as described in Section 8, Windows Software Reference. The measure-
ment protocol is identical, regardless of how the PC is connected to the LI-8100A.
1. Open the LI-8100A Windows application software and click on the Connect
icon, or choose Connect from the Communication menu. Choose the serial
(COM) port on the computer to which the LI-8100A is connected, and click
Connect. Alternatively, click on TCP/IP and enter the IP address of the
Ethernet card in the LI-8100A and click Connect. After a few moments, data
will begin to appear in the Main window.
2. Choose Measurement Configuration from the Setup menu. The Single
Chamber Configuration window appears.
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